4 What is Solar Power? A renewable energy source The conversion of solar power from the sun into heat or electricityUses solar panelsThere are three main methods of obtaining solar powerBest suited for areas where there is low cloud cover that will block out the sunlight
6 Methods of Using Solar Energy Photovoltaic cellsConsists of semi-conductorsAs light hits the surface, energy is producedSolar Thermal ElectricityA mirror is used to reflect the sunlight to acentral receiverA fluid is circulated that drives a generatorThe generator produces electricitySolar Thermal HeaterSolar panels on roof absorbs sunlightSunlight is converted into energy that heatsthe house
7 Advantages Renewable Produces no pollution or waste If the area is sunny, solar energy can be used in remote areas where no other energy source is availableRequire very little maintenanceAlthough expensive in the beginning, you will save a lot money in the long-term
8 Disadvantages Doesn't work at night Solar cells/panels can be very expensiveCan be unreliable unless you're in a very sunny climate. For example, it wouldn’t be very effective in the United KingdomSolar power isn't much use for high-power applications. It may just be enough to heat your house. To obtain decent amounts of solar power, you need a large area of solar panels.
9 The Effects of Solar Power on the. . . Atmosphere: No release of pollutantsLithosphere: No effect because solar panels are usually just installed on pre-existing buildingsHydrosphere: No effectBiosphere: Light is reflected off the panels. This light can distract birds and even airplane pilots. This can be dangerous.
11 ArgentinaSolar power is being used to improve the lives of villagers in a small community in ArgentinaThe EcoAndina Foundation introduced solar powered stoves to the villagers so that they could cook food easilyBefore the solar power cooking stoves were available, the villagers had to use fire woodSince Argentina receives a good amount of sun, it definitely comes in handy
12 India Currently, India relies on coal to provide power The goal of the plan is to have 20 gigawatts of solar energy by the year 2022.The entire project is estimated to cost about $20 billion.
13 Switzerland Solar Impulse Plane The wings hold 11,628 solar cells.The propellers are powered by four 100 kilogram lithium batteries.The goal is to make the plane fly for 36 continuous hours
16 What is Wind Power? It is a renewable energy source The use of the wind to produce electricityWind energy is the fastest growing energy source on earthThe rate at which technology is improving is making wind power more and more appealingMost effective in areas that receive a decent amount of wind
18 Advantages The wind is free Does not cause green house gases or other pollutants.Although wind turbines can be very tall, they only take up a small plot of land. Therefore, the land below can still be used (example: for agriculture)Wind farms are appealing to the landscape.Remote areas that have no other energy source available can use wind turbines to produce their own supply.
19 DisadvantagesThe amount of wind available always varies. There will be times when they produce no electricity at all.Wind turbines can be noisy. It can be equivalent to the noise of a car traveling at 70 mph.Because wind turbines have to be anchored to the ground this could possibly impact soil structure.They do not produce enough electricity to power large amounts of homes.Birds and bats are threatened because they can get caught in the turbines.
20 The Effects of Wind Power on the. . . Atmosphere: No release of pollutantsLithosphere: The anchorage on the ground may affect the soil structureHydrosphere: No effectBiosphere: Birds/bats get caught in the wind turbines. This could threaten the population of the birds.
22 MalawiWilliam Kamkwamba decided to build several wind mills in his small villageUsing anything he could find in the junkyard, he was able to build five windmills, the biggest being about 37 feet tallThe windmills provide electricity and pump water in the small village
23 Vancouver Wind turbine built on Grouse Mountain Will provide the mountain with up to 25% of its powerThe windmill will attract lots of tourists, which will create revenue for the mountain
25 ConclusionInvesting in renewable energy sources such as wind and solar power is very importantSolar and wind power provide clean energyBoth methods come with advantages and disadvantagesHopefully, with rapidly growing technology, these two power sources will become used all over the world and replace non renewable sources